Question

A can give B a start of 20m and C a start of 39 m in 400 m race .how much start can B give C​

Answer 1

In a 400 m race - Ratio of distances

A:B:C

400:380:361

So, when B runs 380 m -> C runs 361 m

when B runs 400 -> c runs 361*400/380=380m

The start B can give C= 400-380=20 m

before A has started the race, B has walked 20m & C has walked 39m. => before B has startes, C has walked 39-20=19m. if this is not the answer, then i think, data is inadequate. without knowing their speeds, its impossible to find out.

Answer 2

In a 400 m race - Ratio of distances

A:B:C

400:380:361

So, when B runs 380 m -> C runs 361 m

when B runs 400 -> c runs 361*400/380=380m

The start B can give C= 400-380=20 m

before A has started the race, B has walked 20m & C has walked 39m. => before B has startes, C has walked 39-20=19m. if this is not the answer, then i think, data is inadequate. without knowing their speeds, its impossible to find out.